Cross Multiplying

Compare Fractions - Cross Multiply

By Ivy Handley

Poll

What is the number on the top of fraction called?

• Numerator

• Denominator

• Fraction

• Number

Poll

What is the name of the bottom of a fraction?

• Fraction

• Denominator

• Numerator

• Number

Poll

What is this sign?

• greater than

• less than

• equal to

Poll

What is this sign?

• greater than

• less than

• equal to

We can figure out the larger fraction by cross multiplying.

​

​Compare Fractions​

• ​We cross from bottom of one fraction to the top of the other fraction.

• Multiply

• Determine the larger number

• Insert a sign​

  ​

Multiple Choice

What should we do first?

• Cross Multiply

• Add Sign

• Determine Larger Number

Multiple Choice

What should we do next?

• Cross Multiply

• Add Sign

• Determine Larger Number

Multiple Choice

What is last?

• Cross Multiply

• Add Sign

• Determine Larger Number

Poll

Let's Multiply!

2 x 3

5 x 1

• 6

• 4

• 1

• 5

Poll

Which number is larger - 5 or 6?

• 5

• 6

• Equal

Poll

If 5 is less than 6,

is one-half

less than <

or

greater than >

three-fifths?

• less than

  <

• greater than

  >

• equal to

  +

Multiple Choice

• less than

  <

• greater than

  >

• equal to

  =

Poll

How do you feel about this lesson?

• Terrible

• Alright

• Fantastic